Arrangement for detecting an opaque label area on a transparent

Details Arrangement for detecting an opaque label area on a transparent Arrangement for detecting an opaque label area on a transparent

1990-09-05

1992-10-06

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

209900, G01N 2186, G06K 904

Patent

active

051534436

ABSTRACT:
For use together with a device for detecting a plurality of information positions where postal information pieces are described, an arrangement is for detecting one of the information positions that is described on an opaque label attached to a transparent envelope. Responsive to a regularly reflected beam from the opaque label, a label positon detector detects a label position where the opaque label is attached to the transparent envelope to produce a label position signal representative of the label position. Responsive to the label position signal, a selector selects the above-mentioned one of the information position.

REFERENCES:
patent: 4013999 (1977-03-01), Erwin et al.
patent: 4034341 (1977-07-01), Isono et al.
patent: 4158835 (1979-06-01), Miura et al.
patent: 4845761 (1989-07-01), Cate et al.

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